<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link href="style.css" rel="stylesheet">
</head>
<body>
    <div class="container">
        <div class="row">
            <div class="col-2">2</div>
            <div class="col-8">8</div>
            <div class="col-2">2</div>
        </div>
        <div class="row">
            <div class="col-3">3</div>
            <div class="col-9">9</div>
        </div>
        <div class="row">
            <div class="col-1">1</div>
            <div class="col-1">2</div>
            <div class="col-1">3</div>
            <div class="col-1">4</div>
            <div class="col-1">5</div>
            <div class="col-1">6</div>
            <div class="col-1">7</div>
            <div class="col-1">8</div>
            <div class="col-1">9</div>
            <div class="col-1">10</div>
            <div class="col-1">11</div>
            <div class="col-1">12</div>
        </div>
        <div class="row">
            <div class="col-6">6</div>
            <div class="col-6">6</div>
        </div>
    </div>
</body>
</html>